Revisiting the IPIP-NEO personality hierarchy with taxonomic graph analysis
Researchers applied a new statistical approach called Taxonomic Graph Analysis (TGA) to a large U.S. dataset of personality test responses (IPIP-NEO). They found support for 28 facets, 6 traits, and 3 meta-traits, but not a general factor of personality. Some of these groupings aligned with existing theory (Openness, Conscientiousness, and Neuroticism), but others diverged significantly, revealing new trait domains such as Sociability, Integrity, and Impulsivity grouped under Disinhibition.